Insect proof wind generating device

ABSTRACT

An insect proof wind generating device comprises a body having an wind inlet and a wind outlet; a wind driver being installed within the body; the actuation of the wind driver being controlled by a circuit board; the circuit board being connected to a magnetic sensor; the magnetic sensor serving for detecting the opening and closing of a door or a window. When it is determined that the door or window is opened, the magnetic sensor will actuate wind generating device to blow wind. The wind driver includes a motor electrically connected to the circuit board and at least on fan driven by the motor. The circuit board is installed with a voltage reduction protection unit for reducing a voltage reduction protection unit for reducing a high voltage to a low voltage suitable for the magnetic sensor. The voltage reduction protection unit is installed on the circuit board;

FIELD OF THE INVENTION

The present invention relates to insect proof devices, and in particularto an insect proof wind generating device which is easily assembled withlower cost and high safety. Thereby the voltage of the magnetic sensoris controlled not to overload so that the magnetic sensor is protectedfrom burning.

BACKGROUND OF THE INVENTION

There are many prior art way for mosquito proof, such as installingscreen windows or screen doors, using burning mosquito coil incense,spraying pesticide, etc. However in opening windows or doors, thescreens cannot prevent the mosquito from flying indoors. The mosquitocoil incense, and pesticide are harmful to human bodies.

Furthermore, in many public places, the above mentioned ways can not beused. Thereby there is an eager demand for a novel design which canimprove the defect in the prior art.

SUMMARY OF THE INVENTION

Accordingly, the primary object of the present invention is to providean insect proof wind generating device which is easily assembled withlower cost and high safety. A voltage of a magnetic sensor is controllednot to overload so that the magnetic sensor is protected from burning.

To achieve above objects, the present invention provides a windgenerating device which comprises a body having an wind inlet and a windoutlet; a wind driver being installed within the body; the actuation ofthe wind driver being controlled by a circuit board; the circuit boardbeing connected to a magnetic sensor; the magnetic sensor serving fordetecting the opening and closing of a door or a window; when it isdetermined that the door or window is opened, the magnetic sensor willactuate wind generating device to blow wind. The wind driver includes amotor electrically connected to the circuit board and at least on fanwhich is driven by the motor. The circuit board is installed with avoltage reduction protection unit for reducing a voltage reductionprotection unit for reducing a voltage to a value suitable for themagnetic sensor.

The voltage reduction protection unit is installed on the circuit board;the voltage reduction protection unit has the following elements; apower input unit serves for providing AC current; the current then flowsto a rectifier voltage regulating unit for voltage stability; then a SSRcircuit is used to rectify the current synchronously so as to descendthe voltage to a smaller current which is then inputted to a magneticdriving logic unit; once the magnetic reed switch actuates, the magneticdriving logic unit serves to return sensing signals to the SSR circuit;then the SSR circuit will control the wind driver to generate wind; thevoltage reduction protection unit actually has the effect of protectingthe magnetic reed switch from burning. The wind generating device asclaimed in claim 1, wherein the magnetic sensor is one of a magneticreed switch or an electromagnetic valve.

The various objects and advantages of the present invention will be morereadily understood from the following detailed description when read inconjunction with the appended drawing.

The various objects and advantages of the present invention will be morereadily understood from the following detailed description when read inconjunction with the appended drawing.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded schematic view of the wind generating device ofthe present invention.

FIG. 2 shows the application of the wind generating device of thepresent invention, wherein the wind generating device is combined with apullable door.

FIG. 3 shows the application of the wind generating device of thepresent invention, wherein the wind generating device is combined with apivotal door.

FIG. 4 is a schematic cross sectional view of the wind generating deviceof the present invention.

FIG. 5 shows the structure of the voltage reduction protection unit ofthe present invention.

DETAILED DESCRIPTION OF THE INVENTION

In order that those skilled in the art can further understand thepresent invention, a description will be described in the following indetails. However, these descriptions and the appended drawings are onlyused to cause those skilled in the art to understand the objects,features, and characteristics of the present invention, but not to beused to confine the scope and spirit of the present invention defined inthe appended claims. Referring to FIG. 1, the wind generating device 1of the present invention is illustrated. The present invention has thefollowing elements.

A body 10 has for example a long structure. However this do not confinethe scope of the present invention.

One end of the body 10 has a wind inlet 11 and another end thereof has awind outlet 12. The wind outlet 12 serves for draining wind from a winddriver in the body 10.

A wind driver is a motor and two fans 22 (the number of fans are notconfined in the present invention). The motor 21 is connected to thefans 22 through a spindle. When the motor 21 operates, the fans 22 willbe driven so as to generate wind. The wind flows to the wind outlet 12of the body 10 so as to form as an air wall.

A control device includes a circuit board 31 which is electricallyconnected to a magnetic sensor, such as a magnetic reed switch 40 or anelectromagnetic valve. The circuit board 31 will actuate the magneticreed switch 40 so as to actuate the motor 21.

The wind generating device of the present invention uses high voltage ACcurrent. To prevent the magnetic reed switch 40 to be burned due to overheat or over current induced from the high voltage. A voltage reductionprotection unit is used to protect the magnetic reed switch 40. Therebythe voltage of 110V or 220V inputted to the wind generating device 1will descend to a voltage suitable for the magnetic reed switch 40 so asto protect the magnetic reed switch 40.

In use, referring to FIGS. 2 to 4, the wind-generating device 1 isinstalled at a top of a door, such as a pullable door 50 or a pivotaldoor 60. The magnetic reed switch 40 will be actuated. Then the circuitboard 31 will control the motor 21 to drive the fans 22 to rotate. Thuswind generates. Then the wind flows out from the wind outlet 12 of thebody 10 to the window or door so as to be formed as a wind wall forpreventing the mosquito to flow indoors. The voltage reductionprotection unit serves to descend a high voltage into a low voltagesuitable for the magnetic reed switch 40 so as to protect the magneticreed switch 40.

Referring to FIG. 5, the voltage reduction protection unit isillustrated. The voltage reduction protection unit is installed on thecircuit board 31. The voltage reduction protection unit has thefollowing elements. A power input unit 51 serves for providing ACcurrent. The current then flows to a rectifier voltage regulating unit52 for voltage stability. Then an SSR circuit 53 is used to rectify thecurrent synchronously so as to descend the voltage from 110V to 220V toa smaller current which is then inputted to a magnetic driving logicunit 54. Once the magnetic reed switch 40 actuates, the magnetic drivinglogic unit 54 serves to return sensing signals to the SSR circuit 53.Then the SSR circuit 53 will control the wind driver 55 to generatewind. The voltage reduction protection unit actually has the effect ofprotecting the magnetic reed switch 40 from burning.

The wind generating device 1 with the magnetic reed switch 40 is used todetect the actuation of the device. This is because the magnetic reedswitch 40 has preferred sensitivity. The wind generating device 1 canblow wind.

Even a gap as smaller as 0.1 to 0.3 mm between the door (or window) andthe wall, the wind generating device 1 can generate wind to prevent themosquito from flowing indoors.

Otherwise, the magnetic reed switch 40 can prevent current to flow out.Moreover, the magnetic reed switch 40 is cheap and is easy to beassembled.

The present invention is thus described, it will be obvious that thesame may be varied in many ways. Such variations are not to be regardedas a departure from the spirit and scope of the present invention, andall such modifications as would be obvious to one skilled in the art areintended to be included within the scope of the following claims.

What is claimed is:
 1. An insect proof wind generating devicecomprising: a body having an wind inlet and a wind outlet; a wind driverbeing installed within the body; the actuation of the wind driver beingcontrolled by a circuit board; the circuit board being connected to amagnetic sensor; the magnetic sensor serving for detecting the openingand closing of a door or a window; when it is determined that the dooror window is opened, the magnetic sensor will actuate wind generatingdevice to blow wind.
 2. The insect proof wind generating device asclaimed in claim 1, wherein the wind driver includes a motorelectrically connected to the circuit board and a fan driven by themotor.
 3. The insect proof wind generating device as claimed in claim 1,wherein the circuit board is installed with a voltage reductionprotection unit for reducing a high voltage to a low voltage suitablefor the magnetic sensor.
 4. The insect proof wind generating device asclaimed in claim 3, wherein the voltage reduction protection unit isinstalled on the circuit board; the voltage reduction protection unithas a power input unit serves for providing AC current; the current thenflows to a rectifier voltage regulating unit for voltage stability; thenan SSR circuit is used to rectify the current synchronously so as todescend the voltage to a smaller current which is then inputted to amagnetic driving logic unit; once the magnetic reed switch actuates, themagnetic driving logic unit serves to return sensing signals to the SSRcircuit; then the SSR circuit will control the wind driver to generatewind; the voltage reduction protection unit has the effect of protectingthe magnetic reed switch from burning.
 5. The insect proof windgenerating device as claimed in claim 1, wherein the magnetic sensor isone of a magnetic reed switch or an electromagnetic valve.